To solve this expression, you must follow your orders of operations or PEMDAS (Parenthesis, Exponents, Multiplication and Division, Addition and Subtraction).
In the case of <span>5[3(14.5+7)-3]-7.4, you not only have parenthesis, but you also have brackets. To start, you would first simplify what is in the parenthesis: </span><span>5[3(14.5+7)-3]-7.4
5[3(21.5)-3]-7.4
Now, simplify what is in the bracket, starting by multiplying 3(21.5) since multiplication comes before addition and subtraction: </span><span>5[3(21.5)-3]-7.4 5[64.5-3]-7.4 5[61.5]-7.4
Now, multiply 5*61.5 since multiplication comes next:</span> <span>5[61.5]-7.4 307.5-7.4
And finally, subtract what is left since it is your final operation remaining to get 300.1 as your final answer.
if ac is a and bc is b, then ab can be c. now we use Pythagorean method. 16 squared is 156 and 12 squared is 144. added together they are 400. 400 to the square root is 20. Your answer is 20
= <span>2035.8